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from typing import Any, Callable, Optional

from azure.core.exceptions import TooManyRedirectsError
from . import AsyncHTTPPolicy
from ._redirect import RedirectPolicyBase


class AsyncRedirectPolicy(RedirectPolicyBase, AsyncHTTPPolicy):
    """An async redirect policy.

    An async redirect policy in the pipeline can be configured directly or per operation.

    :keyword bool permit_redirects: Whether the client allows redirects. Defaults to True.
    :keyword int redirect_max: The maximum allowed redirects. Defaults to 30.

    .. admonition:: Example:

        .. literalinclude:: ../samples/test_example_async.py
            :start-after: [START async_redirect_policy]
            :end-before: [END async_redirect_policy]
            :language: python
            :dedent: 4
            :caption: Configuring an async redirect policy.
    """

    async def send(self, request):  # pylint:disable=invalid-overridden-method
        """Sends the PipelineRequest object to the next policy.
        Uses redirect settings to send the request to redirect endpoint if necessary.

        :param request: The PipelineRequest object
        :type request: ~azure.core.pipeline.PipelineRequest
        :return: Returns the PipelineResponse or raises error if maximum redirects exceeded.
        :rtype: ~azure.core.pipeline.PipelineResponse
        :raises: ~azure.core.exceptions.TooManyRedirectsError if maximum redirects exceeded.
        """
        redirects_remaining = True
        redirect_settings = self.configure_redirects(request.context.options)
        while redirects_remaining:
            response = await self.next.send(request)
            redirect_location = self.get_redirect_location(response)
            if redirect_location and redirect_settings['allow']:
                redirects_remaining = self.increment(redirect_settings, response, redirect_location)
                request.http_request = response.http_request
                continue
            return response

        raise TooManyRedirectsError(redirect_settings['history'])
